Welcome to SMI MFG.

Makers of Intelligent Towed-Vehicle Braking

SMI's™ Braking Systems make towing a vehicle safer and easier with state-of-the-art braking products. There are many braking systems available today, but as you navigate through our site we are sure you will see the difference SMI makes.

SMI systems are loaded with proprietary features that give the user the absolute cutting edge in towed-vehicle braking technology.

Our braking systems are more efficient, easier to install, and costs less than other braking systems. Proudly made in the USA with quality components. 100% finished product testing with 300% on critical components. The industry leading 5-year warranty is the true gauge of our quality. Others offer as little as just 1 year!

Air Force One

Air Force One is truly an advance in towed-vehicle braking technology: proportionate, progressive, gentle, user friendly, and fits every towed vehicle with no modifications. Designed for diesel motor homes with air brakes, AFO is the smallest, most effective braking system available. Follow the link below for more information.

Stay-IN-Play Duo

Number one choice for rigs with hydraulic brakes. The Stay-IN-Play DUO supplemental-braking system is installed so there is no set up required for towing your vehicle. To get ready to tow you simply turn it on; that’s all. Turn it on... and tow. The DUO energizes the towed vehicles power brakes so it is gentle and consistent.
It’s easy to see why Stay-IN-Play DUO is the number one choice.

Delta Force

The Portable-Braking Solution. Weighing in at 50% the weight and 25% the size of other systems, Delta Force is loaded with proprietary features such as the ball-and-socket actuator, Set-it-Once pedal clamp™, tether hold back, dual-signal proportional braking profile and much more.